Most indigenous prisoners are young adult males, with 75.5% of all indigenous prisoners in Tasmania being males aged between 20 and 34 years. For males, the 25-29 age group had the highest imprisonment rate with 2,569 male indigenous prisoners per 100,000 adult indigenous population, while for females aged 35-39 years had the highest imprisonment rate with 194 female indigenous prisoners per 100,000 adult indigenous population. Overall, those aged 25-29 years of age had the highest imprisonment rate with 1,169 indigenous prisoners per 100,000 adult indigenous population (Source: ABS data available on request, Prisoners in Australia, cat. no. 4517.0).

The distribution across the age groups for Indigenous prisoners was similar to the total prisoner population although there were notable differences between the actual imprisonment rates, particularly for those aged 20 to 39 years.